Since the confining force will increase, the increase in resistance to longitudinal crack propagation brings about a gradual transition of shale failure manner from longitudinal to inclined shear failure that demonstrates an escalation in rock plasticity. In the event the confining stress reaches thirty MPa, there remain neighborhood shear https://wellcontrolindrilling10809.sunderwiki.com/2383497/the_2_minute_rule_for_wellbore_stability_issues